// Copyright (C) Kumo inc. and its affiliates.
// Author: Jeff.li lijippy@163.com
// All rights reserved.
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published
// by the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program.  If not, see <https://www.gnu.org/licenses/>.
//


#include <pollux/dwio/common/metrics_log.h>

namespace kumo::pollux::dwio::common {
    namespace {
        class VoidDwioMetricsLogFactory : public DwioMetricsLogFactory {
        public:
            std::shared_ptr<const MetricsLog> create(
                const std::string & /* unused */,
                bool /* unused */) override {
                return MetricsLog::voidLog();
            }
        };

        std::shared_ptr<DwioMetricsLogFactory> &metricsLogFactory() {
            static std::shared_ptr<DwioMetricsLogFactory> factory =
                    std::make_shared<VoidDwioMetricsLogFactory>();
            return factory;
        }
    } // namespace

    void registerMetricsLogFactory(std::shared_ptr<DwioMetricsLogFactory> factory) {
        metricsLogFactory() = std::move(factory);
    }

    DwioMetricsLogFactory &getMetricsLogFactory() {
        return *metricsLogFactory();
    }
} // namespace kumo::pollux::dwio::common
